Free Ground Shipping on orders over $50

POTD: Tomes

POTD: Tomes
August 8, 2016 Brian Truono
Like books stacked on a library shelf, these tomes have many stories to tell about the geological past. At Pictured Rocks National Lakeshore, you’ll find the minerals seeping from the sandstone cliffs in colorful marks which vary by their properties. The banding and streaks are created by iron (red), manganese (black-white), limonite (yellow-brown) and copper (pink-green) which leaches out by way of groundwater. View Print Options

Comments (0)

Leave a reply

Your email address will not be published. Required fields are marked *


Newsletter sign up